CN102528686B - Spring clip - Google Patents
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- CN102528686B CN102528686B CN201010613522.0A CN201010613522A CN102528686B CN 102528686 B CN102528686 B CN 102528686B CN 201010613522 A CN201010613522 A CN 201010613522A CN 102528686 B CN102528686 B CN 102528686B
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- friction
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Abstract
The invention discloses a spring clip, which comprises a first main body comprising a holding part and a clamping part, a second main body comprising a holding part and a clamping part, and a first pivot element and a locking mechanism, wherein the first main body is pivotably connected with the second main body through the first pivot element and the locking mechanism, the locking mechanism is composed of a pair of friction pair components; in the friction pair components, the first friction pair component comprising a first friction pair element is arranged on the first main body, the second friction pair component comprising a second friction pair element is arranged on the second main body; the first friction pair element and the second friction pair element in pairs arranged in the friction pair components mutually rub each other and play a locking role; and the friction pair elements mainly rub in a plane perpendicular to an axis of the first pivot element. The friction pair components are in pairs arranged in the plane perpendicular to the axis of the first pivot element for contact and friction. Because the plane is wider, the abrasion quantity between the friction pair components is little, and requirements of materials made into the friction pair components are lower, the spring clip can be used reliably for a long time.
Description
Technical field
The present invention relates to machine tool technical field, particularly relate to a kind of can the spring clip of stepless changing.
Background technology
Spring clip, in the process used, according to the size of clipped object, needs the aperture adjusting jaws.When operation, aperture is needed again to be fixed as good.For ease of the aperture that fixed adjustment is good, in prior art, there is the spring clip in a large number with retaining mechanism.
US Patent No. 6708587B1 discloses a kind of spring clip, operating element be arranged on clamp handle one outside, available thumb manipulation, simplifies the work of hand, but adopts in clamp handle, arrange the technical scheme that tooth bar pays, realization be have level to regulate.
Spring clip disclosed in US Patent No. 6860179B2 and US7406897B2, is arranged on the inner side of clamp handle by operating element, available forefinger or nameless operation, better handling.Its retaining mechanism comprises the clamp bar of a strip and a rotatable check lock lever.Clamp bar one end is pivotally mounted on handle, and the other end stretches to handle.In order to adapt to the movement of handle, clamp bar is the strip plate-like piece of arc, and is configured to be parallel to pivot, and namely the circular arc home position of clamp bar is at pivot place.
Check lock lever can pivotable, has a slotted opening near pivotal axis one end.Clamp bar can slidably pass through opening.The other end of check lock lever is withstood by a spring.Spring pressure causes the relative clamp bar of opening to be biased, and the clamp bar edge of circular arc and the edge at one of opening two ends or two ends rub, and realizes locking.When overcoming spring pressure, press check lock lever, clamp bar edge and opening edges at two ends disengage, and realize release.
Basic and the pivot axis parallel of the rubbing surface of clamp bar edge and opening edges at two ends.Because clamp bar is thinner, the contact site of its edge and opening edges at two ends can only be usually point cantact or very short linear contact lay, is easy to excessive wear, in using, its locking function reliability can reduce, when even may wear to a certain degree gradually, locking function thoroughly lost efficacy, and whole spring clip is scrapped.Even if according to the technical scheme improved disclosed in US6860179B2, clamp bar edge and opening two ends have employed fillet structure, and excessive wear still can not be avoided completely.Therefore, the material requirements of this kind of spring clip to intermediate plate, check lock lever opening part is higher, causes cost to improve.Clamp bar must manufacture circular arc, its profile and dimensional accuracy processing request higher; Also there is higher dimensional accuracy processing request in Opening length direction, and this all directly causes cost and improves.
US Patent No. 7107881B1 discloses a kind of spring clip, in an one main body, be vertically provided with shaft, is locked or discharge this shaft, with fixing aperture by a L-type element.A part due to L-type element is given prominence to outside main body, needs the help of another hand during adjustment, reduces the degrees of freedom of hand, and convenience during use is poor.And the rubbing surface of its shaft and L-type element is basic and pivot axis parallel, there is the problem of aforementioned excessive wear and the reduction of Long-Time Service locking function reliability equally, higher to material requirements, causes cost to improve.
Therefore, it is a kind of easy to adjust that those skilled in the art is devoted to exploitation, and convenience is good, can use reliably and with long-term, lower-cost can the spring clip of stepless changing.
Summary of the invention
Because the above-mentioned defect of prior art, technical problem to be solved by this invention is to provide a kind of easy to adjust, and convenience is good, can use reliably and with long-term, lower-cost can the spring clip of stepless changing.
For achieving the above object, the invention provides a kind of spring clip, comprise the first main body, it comprises grip portions and retained part; Second main body, it comprises grip portions and retained part; By the first pivot element that the first main body and the second main body are linked together pivotly; With a retaining mechanism, be made up of at least one pair of friction pair parts; Described friction pair parts centering, the first friction pair parts are arranged in the first main body, comprise the first friction pair element; Second friction pair parts are arranged in the second main body, comprise the second friction pair element; First, second friction pair element phase mutual friction in the friction pair parts of described paired setting, plays locking action; Wherein said friction pair element mainly rubs in the plane perpendicular to described first pivot element axis.
Spring clip of the present invention by friction pair element to contacting in the plane be arranged in perpendicular to the first pivot element axis and rubbing.Because this plane is comparatively roomy, contact site can be arranged to longer linear contact lay or even face contact, the wear extent between friction pair element pair is very little.Therefore, lower to the material requirements of friction pair element, can use reliably and with long-term, cost is lower.
In better embodiment of the present invention, described retaining mechanism also comprises a release mechanism, disengaging, removing the locking between first, second friction pair element described for controlling between first, second friction pair element described.This release mechanism can also comprise an operating grip, by pressing with finger described operating grip, described release mechanism being played and removes the effect locked between first, second friction pair element described.
In another better embodiment of the present invention, described first friction pair parts are arranged in the first main body regularly.
In another better embodiment of the present invention, described second friction pair parts are arranged in the second main body regularly.
In another better embodiment of the present invention, described first friction pair element is a strip tablet, has the first type surface that at least one is positioned at the plane substantially vertical with the first pivot element axis, as the rubbing surface contacted with the second friction pair element.
Spring clip of the present invention using the first friction pair element surface of sheet as the rubbing surface contacted with the second friction pair element, less demanding to the contour shape of this chip component, it can be circular arc, also can be rectangle or other elongate in shape, not high to the size tolerance requirements on this chip component width yet, reduce processing cost.
In another better embodiment of the present invention, described second friction pair element is that the first friction pair element of needle roller, wedge or an eccentric cam and sheet forms a friction pair element pair.Or the first friction pair element of multiple needle roller, wedge or eccentric cam and sheet forms multipair friction pair element pair, jointly plays locking action.
Wherein, in a better embodiment of the present invention, described second friction pair element is at least one needle roller;
Further, described second friction pair parts comprise: the fixture block that a described first friction pair element can penetrate, and the relative both sides of described fixture block are provided with bar hole, be provided with at least one end and expose to the needle roller of described bar hole in described bar hole; After described first friction pair element penetrates fixture block, between described bar hole with described first friction pair element, structure has angle that the described needle roller in described bar hole is had with described first friction pair element and contacts or depart from two states; With a needle roller retainer plate, be arranged on the outside of described fixture block by flexible member to limit the axial freedom of described needle roller, and can promote under the effect of described flexible member described needle roller in described bar hole to contact described first friction pair element direction move; The operate portions of described control handle can promote described needle roller and move to the direction departing from described first friction pair element in described bar hole in turn.
Wherein, in another better embodiment of the present invention, described second friction pair element is at least one wedge;
Further, described second friction pair parts comprise: the fixture block that a described first friction pair element can penetrate, the relative both sides of described fixture block are provided with wedge guide groove, are provided with the wedge that at least one end exposes to described wedge guide groove in described wedge guide groove; After described first friction pair element penetrates fixture block, between described wedge guide groove with described first friction pair element, structure has angle that the described wedge in described wedge guide groove is had with described first friction pair element and contacts or depart from two states; With a wedge retainer plate, be arranged on the outside of described fixture block by flexible member to limit the axial freedom of described wedge, and can promote under the effect of described flexible member described wedge in described wedge guide groove to contact described first friction pair element direction move; The operate portions of described control handle can promote described wedge and move to the direction departing from described first friction pair element in described wedge guide groove in turn.
Wherein, in another better embodiment of the present invention, described second friction pair element is at least one eccentric cam;
Further, described second friction pair parts comprise: the fixture block that a described first friction pair element can penetrate; With a cam, be hubbed on described fixture block by a torsion spring; After described first friction pair element penetrates fixture block, the rotation of described cam makes described cam have with described first friction pair element to contact or depart from two states; And described operating grip and cam one-body molded, the turn of described control handle can promote the first friction pair element described in described cam disengages.
In another better embodiment of the present invention, the articulated section of described first main body and described second main body is positioned at the middle part of described first main body and described second main body, makes the grip portions of described first main body and the second main body and retained part lay respectively at the both sides of the articulated section of the first main body and the second main body.Or the articulated section of described first main body and described second main body is positioned at the end of described first main body and described second main body, the grip portions of described first main body and the second main body and retained part is made to be positioned at the same side of the articulated section of the first main body and the second main body.
In another better embodiment of the present invention, in described first main body and/or described second main body, there is semi-open cavity, and described friction pair parts are arranged in described cavity.Described operating grip can be arranged in described cavity, and when clamped condition, described operating grip is positioned at outside described cavity at least partially.
Owing to operating grip to be arranged on the inner side of main body, and mainly in the cavity of main body, user to the operation of operating grip just easily, substantially improves the convenience of spring clip.
In another better embodiment of the present invention, described first friction component can be circular arc; Further, its thickness is roughly even.
In another better embodiment of the present invention, described operating grip and the second friction pair element one-body molded.
In another better embodiment of the present invention, the retained part of described first main body and/or described second main body is provided with active chuck.
In another better embodiment of the present invention, described first main body and described second main body be partly or entirely coated with soft clad.
In another better embodiment of the present invention, described first pivot element that described first main body and described second main body are linked together with a torsion spring, to apply a tension force between described first main body and described second main body.
Be described further below with reference to the technique effect of accompanying drawing to design of the present invention, concrete structure and generation, to understand object of the present invention, characteristic sum effect fully.
Accompanying drawing explanation
Fig. 1 is the first working state structure (self-locking state) schematic diagram of the embodiment of the present invention 1;
Fig. 2 is the second duty (state to be held) structural representation embodiment illustrated in fig. 1.
Fig. 3 is that retaining mechanism embodiment illustrated in fig. 1 is along A-A cross-sectional view;
Fig. 4 is that the retaining mechanism of the embodiment of the present invention 2 is along A-A cross-sectional view;
Fig. 5 is that the retaining mechanism of the embodiment of the present invention 3 is along A-A cross-sectional view;
Fig. 6 is that the retaining mechanism of the embodiment of the present invention 4 is along A-A cross-sectional view;
Fig. 7 is the structural representation of the embodiment of the present invention 5;
Fig. 8 is retaining mechanism embodiment illustrated in fig. 7 and release mechanism structural representation;
Fig. 9 is that the second friction pair parts embodiment illustrated in fig. 7 are along C-C cross-sectional view;
Figure 10 is that retaining mechanism embodiment illustrated in fig. 7 is along C-C section working state structure schematic diagram;
Figure 11 is that retaining mechanism embodiment illustrated in fig. 7 and release mechanism are along B-B cross-sectional view;
Figure 12 is the needle roller force analysis figure under the second duty embodiment illustrated in fig. 2;
Figure 13 is the needle roller force analysis figure under the first duty embodiment illustrated in fig. 1.
Detailed description of the invention
[embodiment 1]
As illustrated in fig. 1 and 2, a specific embodiment of spring clip of the present invention, comprises first main body 10, second main body 20, and by the first pivot 6 that the first main body 10 and the second main body 20 are linked together pivotly.First main body 10, second main body 20 comprises grip portions 102,202 and retained part 101,201 respectively.The retained part of two main bodys 10,20 can also be respectively arranged with active chuck, so that clamping.
The making such as the first pivot 6 screw, bolt, rivet, be positioned at the middle part of the first main body 10 and the second main body 20, the Lower Half of the first main body 10 and the second main body 20 can be formed with semi-open cavity respectively, and soft clad can be coated with in outside, such as leather, artificial leather, plastics or rubber etc.
Spring clip of the present invention also comprises a retaining mechanism.This retaining mechanism comprises friction pair parts, and wherein the first friction pair parts are arranged in the first main body 10, the intermediate plate 32 namely in figure; Second friction pair parts 31 are arranged in the second main body 20, are made up of fixture block 301, needle roller 51, needle roller retainer plate 52 and flexible member 53.
Intermediate plate 32 is strip tablets, and have two opposing first type surfaces, wherein at least one first type surface is positioned at the plane substantially vertical with the first pivot 6 axis.The thickness of intermediate plate 32 is roughly even.
A passage 311 is offered in the middle of fixture block 301.One end 321 of intermediate plate 32 is fixedly installed in the first main body 10, and another free end 322 is relative with fixture block 301, can penetrate passage 311.Free end 322 is the first friction pair element.
As shown in Figure 4, fixture block 301 is fixedly installed on the second main body 20 (not shown).The both sides of fixture block 301 are provided with bar hole 50, and between bar hole 50 and intermediate plate free end 322, structure has angle.The needle roller 51 that two ends expose to bar hole 50 is provided with in bar hole 50.This needle roller 51 forms the second friction pair element.Fixture block 301 arranged outside flexible member 53, promotes needle roller 51 by a needle roller retainer plate 52 and moves towards the direction near intermediate plate free end 322 along bar hole 50.Needle roller retainer plate 52 plays the effect of the axial freedom of restriction needle roller 51 simultaneously.
Due to the existence of above-mentioned angle, between the needle roller 51 in bar hole 50 and intermediate plate free end 322, just there is adjustable spacing.When two grip portions 102,202 move toward one another (pressure) of spring clip, intermediate plate free end 322 is free to slide in passage 311, promote needle roller 51, overcome the pressure of flexible member 53, needle roller 51 moves towards the direction leaving intermediate plate free end 322, the grip portions of spring clip can, at the free single-way moving in pressure direction, make the retained part of spring clip arrive the position of clamping clipped object product.Figure 12 shows its operation principle.The elastic force F of flexible member 53 can be decomposed into tangential Fx and the Fy of normal direction on the contact surface of bar hole and needle roller 51.Fx can make needle roller produce counterclockwise movement tendency.Two grip portions of dead spring folder are equivalent to intermediate plate free end 322 to push away (in figure from left to right direction) to 311 li, passage.Needle roller 51 is subject to the frictional force of intermediate plate free end 322, also can produce the movement tendency rotated counterclockwise, that is, intermediate plate free end 322 can along with rotating counterclockwise of needle roller 51 single-way moving freely from left to right.
Persons skilled in the art are appreciated that above-mentioned angle should be greater than the Self-locking angle on inclined-plane, to avoid self-locking.The size of this Self-locking angle is relevant to the coefficient of friction between intermediate plate and needle roller.
When retained part 101,201 stop motion of spring clip, flexible member 53 makes needle roller 51 be pressed on intermediate plate free end 322 by needle roller retainer plate 52 to the elastic force that needle roller 51 applies, and intermediate plate free end 322 cannot exit, and realizes locking.
Retaining mechanism can also comprise a release mechanism.Release mechanism comprises an operating grip 40, and operating grip 40 is arranged in the second main body 20 by torsion spring 42, and operating grip 40 can turn, for controlling the disengaging between fixture block 301 and intermediate plate 32.The operate portions 41 of operating grip 40, in the turn of operating grip 40, provides a promotion needle roller 51 to the power away from intermediate plate free end 322 direction movement in bar hole 50, as the reaction force of above-mentioned flexible member 53.As the direction of arrow in Fig. 4, needle roller retainer plate 52 applies the thrust (not shown operating grip) that one can overcome flexible member 53 elastic force, needle roller 51 gets back to relaxed state, and intermediate plate 32 is released and unlocks, and its free end 322 can be free to slide in passage 311.
Below in conjunction with Fig. 1, Fig. 2 and Figure 13, by the using method of spring clip of the present invention, its operation principle is described.
Shown in Fig. 1, spring clip at closure state, without active force on operating grip 40.Flexible member 53 promotes needle roller retainer plate 52, needle roller 51 is pushed to bar hole 50 near intermediate plate 32 place, and due to the frictional force effect between needle roller 51 and intermediate plate 32, intermediate plate 32 is locked, and spring clip keeps stable closure state.
When for pulling the first main body 10 to open retained part, if not pressing operation handle 40, owing to being an acute angle angle of friction between needle roller 51 and intermediate plate 32, pulling the power of intermediate plate 32 can drive needle roller 51, making both extrude tighter.As shown in figure 13, the elastic force F of flexible member 53 can be decomposed into tangential Fx and the Fy of normal direction on the contact surface of bar hole and needle roller 51.Fx can make needle roller produce counterclockwise movement tendency.Open retained part for pulling the first main body 10 to be equivalent to intermediate plate free end 322 to be pulled outwardly (from right phase left direction in figure) from passage 311, needle roller 51 is subject to the frictional force of intermediate plate free end 322, can produce the movement tendency rotated clockwise.Two power interact and needle roller 51 meetings are moved near the direction of intermediate plate free end 322, and so just there will be spring clip stressed larger, its pressure being supplied to intermediate plate free end 322 is also larger, reaches the object clamped by intermediate plate free end 322.So, more firmly locked between needle roller 51 and intermediate plate 32.Therefore, the present invention, by above-mentioned simple structure, achieves the self-locking of the first main body 10 and the second main body 20.
When for pulling the first main body 10 to open retained part, and simultaneously pressing operation handle 40, due to the effect of operate portions 41 on operating grip 40, promote the thrust that needle roller 51 overcomes flexible member 53, move to the direction away from intermediate plate 32 in bar hole 50.So, needle roller 51 and intermediate plate 32 disengage, and frictional force disappears, and intermediate plate 32 is released, and the first main body 10 can be pulled, and retained part 101,201 is opened under the effect of torsion spring 42.
In aforesaid operations, only need user can realize with a finger pressing operation handle 40 on the other hand, therefore to have manipulation easy in the present invention, the advantage of one-hand operation.
When retained part reaches predetermined aperture, remove the pressing to operating grip 40.Because the active force on operating grip 40 disappears, the active force of flexible member 53 plays a role, and again pushes needle roller 51 and moves to intermediate plate 32, and produce frictional force between, and intermediate plate 32 is locked.
Now, as shown in Figure 2, the aperture of spring clip is maintained at a stable state, provides convenience for operator uses.
When needs adjust retained part aperture again, only need user with a finger pressing operation handle 40 on the other hand, can realize.
The present invention is owing to arranging bar hole 50 and needle roller 51 structure, utilize operating grip 40 or needle roller retainer plate 52, by promoting needle roller 51 movement in two opposite directions, achieve clamping or the disengaging of needle roller 51 pairs of intermediate plates 32, the aperture achieving spring clip can the technical purpose of stepless changing, improves the applicable performance of spring clip.
The friction pair element that needle roller 51 and intermediate plate 32 form by the present invention is to being arranged in intermediate plate 32 surface contact and rubbing.Because this plane is comparatively roomy, longer linear contact lay can be arranged in contact site, the wear extent between needle roller 51 and intermediate plate 32 is very little.Therefore, lower to the material requirements of friction pair element, can use reliably and with long-term, cost is lower.Further, the present invention using intermediate plate 32 surface as the rubbing surface contacted with needle roller 51, less demanding to the contour shape of intermediate plate 32, it can be circular arc, also can be rectangle or other elongate in shape, not high to the size tolerance requirements on intermediate plate 32 width yet, reduce processing cost.
Further, in the Lower Half of the first main body 10, second main body 20, also there is semi-open cavity.And one end of intermediate plate 32 is arranged in the cavity of the first main body 10, and fixture block 301 is arranged in the cavity of the second main body 20.Operating grip 40 is arranged in the second main body 20 cavity, and when clamped condition, operating grip 40 is positioned at outside this cavity, at least partially so that pressing.
[embodiment 2]
The structure of another specific embodiment of spring clip of the present invention is similar to Example 1, and difference is its retaining mechanism.As shown in Figure 4, two cover bar holes 50 and 50 ' is provided with in the fixture block 301 of retaining mechanism.Two needle rollers 51 and 51 ' that two ends expose to bar hole are provided with in bar hole.Needle roller 51 and intermediate plate free end 322 form a set of friction pair element pair, and needle roller 51 ' and intermediate plate free end 322 form another set of friction pair element pair.Two cover friction pair elements, to acting in conjunction, realize the stepless locking function of spring clip of the present invention.
The operation principle of the present embodiment is identical with the first embodiment, so do not repeat.
[embodiment 3]
The structure of another specific embodiment of spring clip of the present invention is similar to Example 1, difference is, by the second friction pair parts 131 that the second friction pair part replacement of retaining mechanism is new, be made up of fixture block 1301 as shown in Figure 5, wedge 151, wedge retainer plate 152 and flexible member 153.Fixture block 1301 both sides are provided with wedge guide groove 150, are provided with the wedge 151 that two ends expose to wedge guide groove 150 in wedge guide groove 150.This wedge 151 forms the second friction pair element.Fixture block 1301 arranged outside flexible member 153, promotes wedge 151 by a wedge retainer plate 152 and moves towards the direction near intermediate plate free end 322 along wedge guide groove 150.Wedge retainer plate 152 plays the effect preventing wedge 151 from dropping from wedge guide groove 150 simultaneously.
Face contact is arranged in the contact site of the present embodiment, and the wear extent between friction pair element pair is less, and lower to the material requirements of friction pair element, can use reliably and with long-term, cost is lower.
The operation principle of the present embodiment is identical with the first embodiment, so do not repeat.
[embodiment 4]
The structure of another specific embodiment of spring clip of the present invention is similar to Example 3, and difference is, as shown in Figure 6, is provided with two cover wedge guide grooves 150 and 150 ' in the fixture block 1301 of retaining mechanism.Two wedges 151 and 151 ' that two ends expose to wedge guide groove are provided with in wedge guide groove.Wedge 151 and intermediate plate free end 322 form a set of friction pair element pair, and wedge 151 ' and intermediate plate free end 322 form another set of friction pair element pair.Two cover friction pair elements, to acting in conjunction, realize the stepless locking function of spring clip of the present invention.
The operation principle of the present embodiment is identical with the 3rd embodiment, so do not repeat.
[embodiment 5]
The structure of another specific embodiment of spring clip of the present invention is similar to Example 1, also comprises first main body 10, second main body 20, by the first pivot 6 that the first main body 10 and the second main body 20 are linked together pivotly, and a retaining mechanism.First main body 10, second main body 20 comprises grip portions 102,202 and retained part 101,201 respectively.Difference is, the release mechanism in retaining mechanism and the second friction pair parts are installed together, and particularly, operating grip can be one-body molded with the second friction pair element.
Specifically, as shown in Figure 7, this retaining mechanism comprises friction pair parts, and wherein the first friction pair parts are arranged in the first main body 10, the intermediate plate 32 namely in figure; Second friction pair parts 231 are arranged in the second main body 20, are made up of fixture block 2301, cam 141, torsion spring 142 and axle 143.
As shown in Figure 8, fixture block 2301 is that " [" word trench structure is fixedly installed in the second main body 20 half opening.Two STHs 250 of fixture block 2301, arrange axle 143.Cam 141 is arranged on axle 143 by the torsion spring 142 be enclosed within axle 143.This cam 141 forms the second friction pair element.Cam 141 working face be a face of cylinder at least partially, the axis on this face of cylinder and the gyroaxis 143 of cam 141 depart from.In order to clearly the present invention is described, be defined as cam outer rim 1411 by cam 141 working face near the bus of fixture block 2301 grooved depression bottom surface.
The grooved depression of fixture block 2301 forms a passage 2311 with cam 141.The wall of passage 2311 is: the two side 2301 and 2303 of the grooved depression relatively set up, the grooved relatively set up depression bottom surface 2302 and cam outer rim 1411.
Intermediate plate 32 is strip tablets, and have two opposing first type surfaces 3201 and 3202, wherein at least one first type surface is positioned at the plane substantially vertical with the first pivot 6 axis.The thickness of intermediate plate 32 is even.One end 321 of intermediate plate 32 is fixedly installed in the first main body 10, and another free end 322 is relative with fixture block 2301, can penetrate passage 2311, and when penetrating, a first type surface and the grooved of passage 2311 of intermediate plate 32 bottom surface 2302 of caving in is substantially parallel.Free end 322 is the first friction pair element.
As shown in Figure 9, the height of passage 2311 is limited by two side 2301 and 2303.The setting of this height is relevant to the outline perpendicular to first type surface of the free end 322 of intermediate plate 32.When the circular arc that this outline be is the center of circle with the first pivot 6, this is highly minimum of a value.In fact, free end 322 outer contour shape can be other shapes, such as rectangle, and this highly can correspondingly suitably increase, and makes it to adapt with free end 322 outer contour shape.
The width of passage 2311 is limited by grooved depression bottom surface 2302 and cam outer rim 1411.In Fig. 9, when cam 141 rotates on axle 143, its cam outer rim 1411 position rotates with cam 141 and moves left and right, make the width generation respective change of passage 2311, cam 141 has with described intermediate plate 32 and contacts or depart from two states, thus clamping or loosen the free end 322 of the intermediate plate 32 penetrating passage 2311.Visible, the design of cam 141 should make the width minimum of passage 2311 should be slightly less than the thickness of the free end 322 of intermediate plate 32.
As shown in Figure 7, cam 141 is connected with operating grip 140, or cam 141 is one-body molded with operating grip 140.See Figure 11, cam 141 should be designed to the correlation of operating grip 140: when operating grip 140 is basically parallel to intermediate plate 32, cam 141 is in and intermediate plate contact position; Operating grip 140 rotates one when being less than the angle of 90 degree, and cam 141 and intermediate plate disengage.。
Below in conjunction with Figure 10, Figure 11, by the using method of spring clip of the present invention, its operation principle is described.
As shown in figure 11, spring clip at closure state, without active force on operating grip 140.Torsion spring 142 (ginseng Figure 10) actuating cam 141, due to the frictional force effect between cam outer rim 1411 (ginseng Figure 10) and free end 322 first type surface 3201 of intermediate plate 32, the width of passage 2311 arrives minimum position, intermediate plate 32 is locked, and spring clip keeps stable closure state.
When for pulling the first main body 10 to open retained part, if not pressing operation handle 140, owing to being an acute angle angle of friction between cam 141 and first type surface 3201, pulling the power of intermediate plate 32 can be with moving cam 141, making both extrude tighter.So, more firmly locked between cam 141 and intermediate plate 32.Therefore, the present invention, by above-mentioned simple structure, achieves the self-locking of the first main body 10 and the second main body 20.
When for pulling the first main body 10 to open retained part, and simultaneously as direction of arrow pressing operation handle 40 in figure, promote the thrust that operating grip 140 overhead cam 141 overcomes torsion spring 142, the direction that cam outer rim 1411 phase away from intermediate plate 32 is moved.So, cam 141 and intermediate plate 32 disengage, and frictional force disappears, and intermediate plate 32 is released, and the first main body 10 can be pulled, and retained part is opened.
In aforesaid operations, only need user can realize with a finger pressing operation handle 140 on the other hand, therefore to have manipulation easy in the present invention, the advantage of one-hand operation.
When retained part reaches predetermined aperture, remove the pressing to operating grip 140.Because the active force on operating grip 140 disappears, the active force of torsion spring 142 plays a role, and actuating cam 141 moves to intermediate plate 32 again, and produces frictional force between, and intermediate plate 32 is locked.Now, the aperture of spring clip is maintained at a stable state, provides convenience for operator uses.
When needs adjust retained part aperture again, only need user with a finger pressing operation handle 140 on the other hand, can realize.
The structure that the present invention is connected with operating grip 140 owing to arranging cam 141, utilize operating grip 140 or torsion spring 142, by the rotation of actuating cam 141, achieve clamping or the disengaging of cam 141 pairs of intermediate plates 32, the aperture achieving spring clip can the technical purpose of stepless changing, improves the applicable performance of spring clip.
The friction pair element that cam 141 and intermediate plate 32 form by the present invention is to being arranged in intermediate plate 32 surface contact and rubbing.Because this plane is comparatively roomy, longer linear contact lay can be arranged in contact site, the wear extent between cam 141 and intermediate plate 32 is very little.Therefore, lower to the material requirements of friction pair element, can use reliably and with long-term, cost is lower.Further, the present invention using intermediate plate 32 surface as the rubbing surface contacted with cam 141, less demanding to the outer contour shape of intermediate plate 32, it can be circular arc, also can be rectangle or other elongate in shape, not high to the size tolerance requirements on intermediate plate 32 width yet, reduce processing cost.
In other embodiments of the invention, the articulated section of the first main body and the second main body also can be positioned at the end of the first main body and the second main body.
More than describe preferred embodiment of the present invention in detail.Should be appreciated that the ordinary skill of this area just design according to the present invention can make many modifications and variations without the need to creative work.Therefore, all technical staff in the art, all should by the determined protection domain of claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (21)
1. a spring clip, comprising:
First main body, it comprises grip portions and retained part;
Second main body, it comprises grip portions and retained part;
By the first pivot element that the first main body and the second main body are linked together pivotly; With
A retaining mechanism, is made up of at least one pair of friction pair parts; Described friction pair parts centering,
First friction pair parts are arranged in the first main body, comprise the first friction pair element;
Second friction pair parts are arranged in the second main body, comprise the second friction pair element;
First, second friction pair element of described friction pair parts centering forms a friction pair element pair,
Locking action is played by phase mutual friction;
It is characterized in that: described friction pair element rubs in the plane perpendicular to described first pivot element axis to main, described first friction pair element is a strip tablet, there is the first type surface that at least one is positioned at the plane substantially vertical with the first pivot element axis, as the rubbing surface contacted with the second friction pair element.
2. spring clip as claimed in claim 1, is characterized in that: described retaining mechanism also comprises a release mechanism, for removing the locking between first, second friction pair element described.
3. spring clip as claimed in claim 2, is characterized in that: described release mechanism comprises an operating grip, by pressing with finger described operating grip, described release mechanism being played and removes the effect locked between first, second friction pair element described.
4. the spring clip as described in claim arbitrary in claims 1 to 3, is characterized in that: described first friction pair parts are arranged in the first main body regularly.
5. spring clip as claimed in claim 3, is characterized in that: described second friction pair parts are arranged in the second main body regularly.
6. spring clip as claimed in claim 5, is characterized in that: described second friction pair element is at least one needle roller.
7. spring clip as claimed in claim 6, is characterized in that:
Described second friction pair parts comprise:
The fixture block that a described first friction pair element can penetrate, the relative both sides of described fixture block are provided with bar hole, be provided with at least one end and expose to the needle roller of described bar hole in described bar hole; After described first friction pair element penetrates fixture block, between described bar hole with described first friction pair element, structure has angle that the described needle roller in described bar hole is had with described first friction pair element and contacts or depart from two states; With
A needle roller retainer plate, be arranged on the outside of described fixture block by flexible member to limit the axial freedom of described needle roller, and can promote under the effect of described flexible member described needle roller in described bar hole to contact described first friction pair element direction move;
The operate portions of described operating grip can promote described needle roller and move to the direction departing from described first friction pair element in described bar hole in turn.
8. spring clip as claimed in claim 5, is characterized in that: described second friction pair element is at least one wedge.
9. spring clip as claimed in claim 8, is characterized in that:
Described second friction pair parts comprise:
The fixture block that a described first friction pair element can penetrate, the relative both sides of described fixture block are provided with wedge guide groove, are provided with the wedge that at least one end exposes to described wedge guide groove in described wedge guide groove; After described first friction pair element penetrates fixture block, between described wedge guide groove with described first friction pair element, structure has angle that the described wedge in described wedge guide groove is had with described first friction pair element and contacts or depart from two states; With
A wedge retainer plate, be arranged on the outside of described fixture block by flexible member to limit the axial freedom of described wedge, and can promote under the effect of described flexible member described wedge in described wedge guide groove to contact described first friction pair element direction move;
The operate portions of described operating grip can promote described wedge and move to the direction departing from described first friction pair element in described wedge guide groove in turn.
10. spring clip as claimed in claim 5, is characterized in that: described second friction pair element is at least one eccentric cam.
11. spring clips as claimed in claim 10, is characterized in that:
Described second friction pair parts comprise:
The fixture block that a described first friction pair element can penetrate; With
A cam, is hubbed on described fixture block by a torsion spring; After described first friction pair element penetrates fixture block, the rotation of described cam makes described cam have with described first friction pair element to contact or depart from two states;
And described operating grip and cam one-body molded, the turn of described operating grip can promote the first friction pair element described in described cam disengages.
12. spring clips as described in claim arbitrary in claims 1 to 3, is characterized in that: the grip portions of described first main body and the second main body and retained part lay respectively at the both sides of the articulated section of the first main body and the second main body.
13. spring clips as described in claim arbitrary in claims 1 to 3, is characterized in that: the grip portions of described first main body and the second main body and retained part are positioned at the same side of the articulated section of the first main body and the second main body.
14. spring clips as claimed in claim 3, is characterized in that: have semi-open cavity in described first main body and/or described second main body.
15. spring clips as claimed in claim 14, is characterized in that: being arranged at least partially in described cavity of described friction pair parts.
16. spring clips as claimed in claim 15, is characterized in that: described operating grip is arranged in described cavity, described operating grip is positioned at outside described cavity at least partially when clamped condition.
17. spring clips as claimed in claim 5, is characterized in that: described first friction component is circular arc.
18. spring clips as claimed in claim 5, is characterized in that: the thickness of described first friction component is roughly even.
19. spring clips as claimed in claim 1, is characterized in that: the retained part of described first main body and/or described second main body is provided with active chuck.
20. spring clips as claimed in claim 1, is characterized in that: described first main body and described second main body be partly or entirely coated with soft clad.
21. spring clips as claimed in claim 1, is characterized in that: described first pivot element that described first main body and described second main body are linked together with a torsion spring, to apply a tension force between described first main body and described second main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010613522.0A CN102528686B (en) | 2010-12-15 | 2010-12-15 | Spring clip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010613522.0A CN102528686B (en) | 2010-12-15 | 2010-12-15 | Spring clip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102528686A CN102528686A (en) | 2012-07-04 |
| CN102528686B true CN102528686B (en) | 2015-07-08 |
Family
ID=46337374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010613522.0A Expired - Fee Related CN102528686B (en) | 2010-12-15 | 2010-12-15 | Spring clip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102528686B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104400682A (en) * | 2014-11-20 | 2015-03-11 | 无锡锡山安达防爆电气设备有限公司 | Adjustable clamping pliers |
| CN105167822B (en) * | 2015-10-13 | 2018-08-31 | 哈尔滨理工大学 | Stageless self-locking formula operation on tonsils nipper and grasping means |
| CN109056476B (en) * | 2018-08-30 | 2020-08-18 | 中国一冶集团有限公司 | Self-controllable clamp and kerbstone laying platform used by same |
| CN109732500A (en) * | 2019-02-28 | 2019-05-10 | 绍兴三鼎工具有限公司 | Spring clip |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2654283Y (en) * | 2003-09-29 | 2004-11-10 | 上海朝华工具有限公司 | Pressure regulatable notch wheel clamp |
| CN2659636Y (en) * | 2003-10-22 | 2004-12-01 | 张庆宗 | Improved structure in spring clamp |
| CN2659635Y (en) * | 2003-10-23 | 2004-12-01 | 张庆宗 | Improved structure in clamp |
| CN2803626Y (en) * | 2005-05-20 | 2006-08-09 | 刘逢忠 | Improved structure of pinch clamp |
| CN201098850Y (en) * | 2007-11-28 | 2008-08-13 | 南京工业职业技术学院 | Self-adjusting vice grip |
| CN202062318U (en) * | 2010-12-15 | 2011-12-07 | 杭州巨星科技股份有限公司 | Spring clamp |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7406897B2 (en) * | 2005-11-08 | 2008-08-05 | Chin Lin Hsu | Clamping device having stepless braking effect |
-
2010
- 2010-12-15 CN CN201010613522.0A patent/CN102528686B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2654283Y (en) * | 2003-09-29 | 2004-11-10 | 上海朝华工具有限公司 | Pressure regulatable notch wheel clamp |
| CN2659636Y (en) * | 2003-10-22 | 2004-12-01 | 张庆宗 | Improved structure in spring clamp |
| CN2659635Y (en) * | 2003-10-23 | 2004-12-01 | 张庆宗 | Improved structure in clamp |
| CN2803626Y (en) * | 2005-05-20 | 2006-08-09 | 刘逢忠 | Improved structure of pinch clamp |
| CN201098850Y (en) * | 2007-11-28 | 2008-08-13 | 南京工业职业技术学院 | Self-adjusting vice grip |
| CN202062318U (en) * | 2010-12-15 | 2011-12-07 | 杭州巨星科技股份有限公司 | Spring clamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102528686A (en) | 2012-07-04 |
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